<!-- 实现点击当前item高亮的效果 -->

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style>
      .pink {
        background-color: pink;
      }
    </style>
  </head>
  <body>
    <button class="pink" id="name">按钮1</button>
    <button>按钮2</button>
    <button>按钮3</button>
    <button>按钮4</button>
    <script>
      let bts = document.querySelectorAll("button");
      for (let i = 0; i < bts.length; i++) {
        bts[i].addEventListener("click", function () {
          document.querySelector(".pink").className = "";
          this.className = "pink";
        });
      }
    </script>
  </body>
</html>
